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a
( ) Preglacial
Smooth slopes
b
( ) Glacial River floodplain
Arête
Cirque
glacier
Basal debris
Medial
moraine
( ) Postglacial Arête
c
Horn
Scree Hanging Truncated
valley spur
Cirque
Tarn
Lip
Terminal Lateral Step Ground Terminal
moraine moraine moraine moraine
Figure 10.6 The evolution of some alpine glacial landforms. (a) A landscape before an ice age. (b) The same landscape
during an ice age, and (c) after an ice age.
Source: After Trenhaile (1998, 128)
